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Finding the Fourth Proportional to 325,840.40, 488,736.30 and 136,251.80

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Solution

The fourth proportional to 325,840.40, 488,736.30 and 136,251.80 is: 204,367.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,840.40 : 488,736.30 = 136,251.80 : x
  2. Step 2: Convert to fraction form
    325,840.40/488,736.30 = 136,251.80/x
  3. Step 3: Cross multiply
    325,840.40x = 488,736.30 × 136,251.80
  4. Step 4: Simplify right side
    325,840.40x = 66,591,200,600.34
  5. Step 5: Solve for x
    x = 66,591,200,600.34/325,840.40
  6. Step 6: Final answer
    x = 204,367.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.